PokerTracker

I had a running PT2 version. But I uninstalled it by mistake.
I thougth no problem an downloaded the latest PT2 Version 2.17.03d (Full Version).

Installing of this version seems ok. But when I start PT2 nothing happens.
If I try to start PT2 a second time i get the warning "Another instance of Poker Tracker is already running. Be aware ...."

Do you have any idea what is going wrong?

Thank you for your help.

Restart the computer and try it again making sure to open just one instance of the program. It's not an error message, it doesn't prevent the program from opening.